0x07-networking_basics

0x07. Networking basics #0

This project is about networking basics. We will learn about OSI model, LAN, WAN, IP address, TCP/UDP, and more.

Files

• 0-OSI_model: Text file answering the following questions:

  • What is the OSI model?
    • Set of specifications that network hardware manufacturers must respect
    • The OSI model is a conceptual model that characterizes the communication functions of a telecommunication system without regard to their underlying internal structure and technology
    • The OSI model is a model that characterizes the communication functions of a telecommunication system with a strong regard for their underlying internal structure and technology
  • How is the OSI model organized?
    • Alphabetically
    • From the lowest to the highest level
    • Randomly

• 1-types_of_network: Text file answering the following questions:

  • What type of network a computer in local is connected to?
    • Internet
    • WAN
    • LAN
  • What type of network could connect an office in one building to another office in a building a few streets away?
    • Internet
    • WAN
    • LAN
  • What network do you use when you browse www.google.com from your smartphone (not connected to the Wifi)?
    • Internet
    • WAN
    • LAN

• 2-MAC_and_IP_address: Text file answering the following questions:

  • What is a MAC address?
    • The name of a network interface
    • The unique identifier of a network interface
    • A network interface
  • What is an IP address?
    • Is to devices connected to a network what postal address is to houses
    • The unique identifier of a network interface
    • Is a number that network devices use to connect to networks

• 3-UDP_and_TCP: Text file answering the following questions:

  • Which statement is correct for the TCP box:
    • It is a protocol that is transferring data in a slow way but surely
    • It is a protocol that is transferring data in a fast way and might loss data along in the process
  • Which statement is correct for the UDP box:
    • It is a protocol that is transferring data in a slow way but surely
    • It is a protocol that is transferring data in a fast way and might loss data along in the process
  • Which statement is correct for the TCP worker:
    • Have you received boxes x, y, z?
    • May I increase the rate at which I am sending you boxes?

• 4-TCP_and_UDP_ports: Bash script that displays listening ports:

  • That only shows listening sockets
  • That shows the PID and name of the program to which each socket belongs

• 5-is_the_host_on_the_network: Bash script that pings an IP address passed as an argument:

  • Accepts a string as an argument
  • Displays Usage: 5-is_the_host_on_the_network {IP_ADDRESS} if no argument is passed
  • Ping the IP 5 times